I just like listening to the traffic. Why do I hear 'cactus' sometimes referring to flight #? Also, when I listened to the recording of US Airways Flight 1549 that went into the Hudson River, not only did the pilot call his flight Cactus 1549, but sometimes he or the controller referred to it as 1529? why change the #'s? Thanks for any help understanding.

"Cactus" is the name used by US Airways in ATC communications. The name Cactus originated from America West airlines before they merged with US Air. After the merger, US Airways began using the "Cactus" name. They're not the only airline to use an unusual name; British Airways, for example, is "Speed Bird", Aer Lingus is "Shamrock", etc. Not sure about the flight number difference, maybe it just sounded like he said 1529 instead of 1549?. The flight number shouldn't have changed.

Easy to get confused when you're under duress.Once had to do a dead stick landing in an open field after an abrupt engine failure, later dtermined to be a broken drive shaft. When asked by the controller, on our way down, gave our location as 1 mile West of town X. Wrong. 1 mile West of town Y. All turned out OK eventually.